Lecture-12-Instream-Water-Quality-1

《Lecture-12-Instream-Water-Quality-1》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、LECTURE#12INSTREAMWATERQUALITY–TEMPERATURE,SEDIMENT,&GENERALCONSTITUENT1of36RCHRESSTRUCTURECHARTRCHRESSimulateareachormixedreservoirHYDRHTRCHGQUALSimulatehydraulicSimulateheatSimulatebehaviorexchange&watergeneralizedtemperaturequalityconstituentsADCALCSEDTRNRQUALEstimateadvectiveEstimateadvectiveSim

2、ulateinorganicSimulateconstituentsbehaviorbehaviorsedimentinvolvedinbiochemicalofconstituentsofconstituentstransformationsCONSSimulateconservativeconstituents2of36WATERTEMPERATURE(HTRCH)•Temperatureisacriticalhabitatcharacteristicforfishandotherorganisms•Temperatureaffectsratesofotherwaterqualitypro

3、cesses•Dissolvedoxygenconcentrationsaredependentontemperature3of36HEATEXCHANGEPROCESSESPrecipitationLong-waveradiationShort-waveAtmosphericWatersurfaceConductionEvaporationradiationqswqatmqbqhqeHeatgainwithHeatlossHeatStorage,indicatedbyinflowwithoutflowtemperaturexvolumeofwater(temperaturerelativet

4、ofreezing)Groundconductionqg4of36WATERTEMPERATURE-ENERGYBALANCEq=q+q+q+q+q+qtotalswatmbhegComponentKeyparametersandinputsqShort-waveradiationSolarradiation*,shadingfactorswqLong-waveradiationCloudcover*,airtemperature,*atm(atmospheric)LWradiationcoefficientqLong-waveradiationb(back)qConduction/conve

5、ctionAirtemperature*,windspeed*,hHeattransportcoefficientqEvaporationDewpoint*,airtemperature*,ewindspeed*,evaporationcoefficientqGroundconductionGroundtemperature,conductiong(optional)coefficientsNote:Airtemperatureiscorrectedforelevation*Timeseriesinput5of36DATAREQUIREDFORWATERTEMPERATURE•Meteorol

6、ogicdata-solarradiation-airtemperature-windspeed-cloudcover-dewpointtemperature•Surfaceareaofwaterexposedtoradiation(shade)•Boundaryconditions–inflow/outflowratesandtemperatures•Measuredwatertemperaturesformodelcalibration6of36WATERTEMPERATURECALIBRATION•Calibrationparameters:CFSAEX-fractionofwaters

7、urfaceexposedtosolarradiationKATRAD-atmosphericlong-waveradiationcoefficient(~9)KCOND-conductioncoefficient(1–20)KEVAP-evaporationcoefficient(1–5)KMUD-water-bedsedimentheatconductioncoefficientKGRND-g